Worked on the OpenListTeam/OpenList repository to address a critical issue in Mega cloud storage integration, focusing on backend development with Go. The main task involved resolving a bug where files with duplicate names led to outdated versions being listed and downloaded. By implementing logic to filter out older files and ensure only the newest version is selected, the developer stabilized CRUD operations and improved data integrity for users. The solution was verified through targeted checks to maintain regression safety. This work reduced user-facing inconsistencies and support tickets, demonstrating a methodical approach to backend reliability and cloud storage version management.